1package launchpad
  2
  3import (
  4	"errors"
  5	"fmt"
  6	"net/http"
  7	"regexp"
  8
  9	"github.com/MichaelMure/git-bug/bridge/core"
 10	"github.com/MichaelMure/git-bug/cache"
 11	"github.com/MichaelMure/git-bug/input"
 12)
 13
 14var ErrBadProjectURL = errors.New("bad Launchpad project URL")
 15
 16func (Launchpad) ValidParams() map[string]interface{} {
 17	return map[string]interface{}{
 18		"URL":     nil,
 19		"Project": nil,
 20	}
 21}
 22
 23func (l *Launchpad) Configure(repo *cache.RepoCache, params core.BridgeParams) (core.Configuration, error) {
 24	var err error
 25	var project string
 26
 27	switch {
 28	case params.Project != "":
 29		project = params.Project
 30	case params.URL != "":
 31		// get project name from url
 32		project, err = splitURL(params.URL)
 33	default:
 34		// get project name from terminal prompt
 35		project, err = input.Prompt("Launchpad project name", "project name", input.Required)
 36	}
 37
 38	if err != nil {
 39		return nil, err
 40	}
 41
 42	// verify project
 43	ok, err := validateProject(project)
 44	if err != nil {
 45		return nil, err
 46	}
 47	if !ok {
 48		return nil, fmt.Errorf("project doesn't exist")
 49	}
 50
 51	conf := make(core.Configuration)
 52	conf[core.ConfigKeyTarget] = target
 53	conf[confKeyProject] = project
 54
 55	err = l.ValidateConfig(conf)
 56	if err != nil {
 57		return nil, err
 58	}
 59
 60	return conf, nil
 61}
 62
 63func (*Launchpad) ValidateConfig(conf core.Configuration) error {
 64	if v, ok := conf[core.ConfigKeyTarget]; !ok {
 65		return fmt.Errorf("missing %s key", core.ConfigKeyTarget)
 66	} else if v != target {
 67		return fmt.Errorf("unexpected target name: %v", v)
 68	}
 69
 70	if _, ok := conf[confKeyProject]; !ok {
 71		return fmt.Errorf("missing %s key", confKeyProject)
 72	}
 73
 74	return nil
 75}
 76
 77func validateProject(project string) (bool, error) {
 78	url := fmt.Sprintf("%s/%s", apiRoot, project)
 79
 80	client := &http.Client{
 81		Timeout: defaultTimeout,
 82	}
 83
 84	resp, err := client.Get(url)
 85	if err != nil {
 86		return false, err
 87	}
 88
 89	return resp.StatusCode == http.StatusOK, nil
 90}
 91
 92// extract project name from url
 93func splitURL(url string) (string, error) {
 94	re, err := regexp.Compile(`launchpad\.net[\/:]([^\/]*[a-z]+)`)
 95	if err != nil {
 96		panic("regexp compile:" + err.Error())
 97	}
 98
 99	res := re.FindStringSubmatch(url)
100	if res == nil {
101		return "", ErrBadProjectURL
102	}
103
104	return res[1], nil
105}